JPS5460443A - Reflow power supply control system - Google Patents

Reflow power supply control system

Info

Publication number
JPS5460443A
JPS5460443A JP12775377A JP12775377A JPS5460443A JP S5460443 A JPS5460443 A JP S5460443A JP 12775377 A JP12775377 A JP 12775377A JP 12775377 A JP12775377 A JP 12775377A JP S5460443 A JPS5460443 A JP S5460443A
Authority
JP
Japan
Prior art keywords
reflow
chip
peak
value
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12775377A
Other languages
Japanese (ja)
Inventor
Masao Sonoda
Shuji Takeshita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12775377A priority Critical patent/JPS5460443A/en
Publication of JPS5460443A publication Critical patent/JPS5460443A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To accomplish accurate control of temperature of a reflow chip by controlling the phase angle in energization within the range of maintaining the peak of the AC voltage fed to the chip at a constant value by a deviation between the peak value and the set value of the output voltage.
CONSTITUTION: A control is made in the temperature of a reflow chip 2 applied to a reflow connection for bonding fine wires to a printed board. In heating the reflow chip with an AC current AC fed thereto through a thyrister 7, a comparison is made by means of a comparator between the set value and a peak value which is obtained from application of voltage detected across ends of the reflow chip to a peak value detecting means 4 through an amplifier 3. The resulting deviation is used to control the phase angle in the energization of a thyristor through a thyrister controller 6 within such a range that the peak of the AC current fed to the reflow chip can be maintained at a constant value. In this manner, the temperature of the reflow chip can be controlled accurately
COPYRIGHT: (C)1979,JPO&Japio
JP12775377A 1977-10-24 1977-10-24 Reflow power supply control system Pending JPS5460443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12775377A JPS5460443A (en) 1977-10-24 1977-10-24 Reflow power supply control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12775377A JPS5460443A (en) 1977-10-24 1977-10-24 Reflow power supply control system

Publications (1)

Publication Number Publication Date
JPS5460443A true JPS5460443A (en) 1979-05-15

Family

ID=14967825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12775377A Pending JPS5460443A (en) 1977-10-24 1977-10-24 Reflow power supply control system

Country Status (1)

Country Link
JP (1) JPS5460443A (en)

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